Answered

A student investigated how the pressure in a diving pool varied with depth. He filled a

balloon with helium and tied it to the end of a long pole. Then he submerged the

balloon to various depths and observed the result. Which one of the following best

describes what happed to the balloon as it went deeper?

AThe balloon got larger because the pressure of the water around it increased

compared with the pressure inside the balloon.

BThe balloon got larger because the pressure of the water around it decreased

compared with the pressure inside the balloon.

CThe balloon got smaller because the pressure of the water around it increased

compared with the pressure inside the balloon.

DThe balloon got smaller because the pressure of the water around it decreased

compared with the pressure inside the balloon.

Verified Answer :

Pressure of water increases with depth. Thus, the balloon decreases in volume as it is forced deeper. The correct answer is C).

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